1. Installs a new package
2. Shows default packages in R
3. Error
4. Nothing will print
Shows default packages in R
1. Symbol
2. Missing Data
3. 5
4. 15.5
Missing Data
1. S
2. C
3. MATLAB
4. SAS
S
1. C
2. Python
3. MATLAB
4. SAS
C
1. Numeric
2. Character
3. Integer
4. Logical
Character
1. 4
2. 5
3. 6
4. 0
6
1. Numeric
2. Character
3. Integer
4. Logical
Numeric
1. Numeric, Integer
2. Integer, Numeric
3. Integer, Integer
4. Numeric, Numeric
Integer, Numeric
1. 5
2. 6
3. 8
4. 10
6
1. row.names()
2. colnames()
3. col.names()
4. column name cannot be set for a data frame
row.names()